video back and forth in preview (premiere CS4)

[george2005]

I created 1920x1080 60i project and droped serveral video clips (all 1920x1080 60i) into the timeline.
When I play the rendered video, at certains points, the video play back and forth, especially around the connection of two video clips.

Anyone had and the same experience? How to make it work?

Thanks!

[george2005]

I am wondering if anyone knows?

Software installed: premiere pro CS4 + mainconcept h.264/mpeg4 plug-in
video clips: 1080 60i mp4 from FHD camcoder
gspot shows: codec avc1, name h.264/mpeg-4 avc, codec status undetermined
kbps 17219, Qf 0.139, pics/s 59.923, frames/s 59.923,
pic 1920x1080, sar 1.778 (16:9), par (empty), dar 1.778 (16:9)
I can play clips with wmplayer without any problem.

I created AVC-I 100 1080i60 or AVCHD 1920x1080 60i (ended up the same) project,
import two videos and drop them in timeline
Assume first video has 100 frames: a1, a2, a3, ..., a97, a98, a99, a100
Assume second video has 100 frames: b1, ... b100

When I play videos in the timeline, I should get smooth 200 frames a1, ..., a100, b1, ... b100, but actually it is not.

Sometimes I got like:
a1, a2, ...., a97, a98, a99, a95, b1, b2, ....., b90, b91, b81, b82, b81, b82,...

a100 is replaced by some previous frame
and so are b92~b100.

How could this happen?